An updated version of the web portal (and supporting tester code) is now available on Sourceforge here: http://sourceforge.net/projects/pagetest/files/
There were some IE8 compatibility issues with the original release that have since been fixed. This incorporates those fixes as well as recent changes to the portal:
Start Render screen shots
Improvements to accuracy of Start Render measurement
Waterfalls and Optimization checklists are now drawn dynamically instead of using static images (~30% reduction in storage space)
Pie charts are now cached correctly (user browser, not server-side caching)
[*]Fixed a few bugs with the drawing of the connection view waterfall
There are 2 files available. The patch can be applied over an existing 1.4 site and will maintain any customizations and settings. The non-patch version is a full install.
Installation instructions are in a readme file in the release. 1.5 was an incremental build that was never released as a package (in case you’re wondering about the version jump).